Unfortunately there is no live demo anymore. After using Heroku, Appfog and Openshift I understood that it was better to build a docker image instead because it is free, universal and does not go to sleep after 30 minutes of inactivity :-)

You can use the image in three steps:

Have Docker installed and running

Pull image with docker pull fabiomaffioletti/jsondoc-sample-boot

Run image with docker run -p 8080:8080 fabiomaffioletti/jsondoc-sample-boot

Go to http://localhost:8080/jsondoc-ui.html?url=http://localhost:8080/jsondoc